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path: root/drivers/pci/pci.c
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Diffstat (limited to 'drivers/pci/pci.c')
-rw-r--r--drivers/pci/pci.c20
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 37c00f6fd801..728b3c863d87 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -17,11 +17,16 @@
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/string.h>
+#include <linux/log2.h>
#include <asm/dma.h> /* isa_dma_bridge_buggy */
#include "pci.h"
unsigned int pci_pm_d3_delay = 10;
+#ifdef CONFIG_PCI_DOMAINS
+int pci_domains_supported = 1;
+#endif
+
#define DEFAULT_CARDBUS_IO_SIZE (256)
#define DEFAULT_CARDBUS_MEM_SIZE (64*1024*1024)
/* pci=cbmemsize=nnM,cbiosize=nn can override this */
@@ -1454,7 +1459,7 @@ int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc)
int cap, err = -EINVAL;
u32 stat, cmd, v, o;
- if (mmrbc < 512 || mmrbc > 4096 || (mmrbc & (mmrbc-1)))
+ if (mmrbc < 512 || mmrbc > 4096 || !is_power_of_2(mmrbc))
goto out;
v = ffs(mmrbc) - 10;
@@ -1526,7 +1531,7 @@ int pcie_set_readrq(struct pci_dev *dev, int rq)
int cap, err = -EINVAL;
u16 ctl, v;
- if (rq < 128 || rq > 4096 || (rq & (rq-1)))
+ if (rq < 128 || rq > 4096 || !is_power_of_2(rq))
goto out;
v = (ffs(rq) - 8) << 12;
@@ -1566,6 +1571,13 @@ int pci_select_bars(struct pci_dev *dev, unsigned long flags)
return bars;
}
+static void __devinit pci_no_domains(void)
+{
+#ifdef CONFIG_PCI_DOMAINS
+ pci_domains_supported = 0;
+#endif
+}
+
static int __devinit pci_init(void)
{
struct pci_dev *dev = NULL;
@@ -1585,6 +1597,10 @@ static int __devinit pci_setup(char *str)
if (*str && (str = pcibios_setup(str)) && *str) {
if (!strcmp(str, "nomsi")) {
pci_no_msi();
+ } else if (!strcmp(str, "noaer")) {
+ pci_no_aer();
+ } else if (!strcmp(str, "nodomains")) {
+ pci_no_domains();
} else if (!strncmp(str, "cbiosize=", 9)) {
pci_cardbus_io_size = memparse(str + 9, &str);
} else if (!strncmp(str, "cbmemsize=", 10)) {